isocytolysin

A cytolysin that reacts with the cells of certain other animals of the same species, but not with the cells of the individual that formed the i..

* * *

iso·cy·tol·y·sin (i″so-si-tolґə-sin) [iso- + cytolysin] a cytolysin that acts on the cells of animals of the same species as that from which it is derived.